a module to compile Phrasebook in different lang combinations

examples/phrasebook/Compile.hs

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+import List
+import System
+
+-- (c) Aarne Ranta 2010 under GNU LGPL
+
+-- Compile files into pgf, in chosen combinations.
+
+-- Usage: runghc Compile (-make | -link)? Eng Fre Fin ...
+-- The -make option links all pgf files to one in the end
+-- The -link option only links, without first compiling
+-- Arguments whose length are 3 characters are prefixed with mainmodu.
+-- Other arguments are passed literally.
+
+-- Thus, for instance, to produce an English-Swedish-Romanian phrasebook with English
+-- disambiguation, the command is
+--
+--  runghc Compile -link Eng Swe Ron DisambPhrasebookEng
+
+
+-- change this to apply to another project; alternatively, just use full file names
+mainmodu = "Phrasebook"
+
+main = do
+  (opts,langs) <- getArgs >>= return . partition ((=='-') . head)
+  let modus = [mkFile la | la <- langs]
+  putStrLn $ unwords modus
+  if notElem "-link" opts 
+    then mapM_ compileOne modus >> return ()
+    else return ()
+  case opts of
+    _ | elem "-make" opts || elem "makeonly" opts -> do
+      system $ "gf -make " ++ unwords (map (++ ".pgf") modus)
+      return () 
+    _ -> return ()
+
+compileOne modu = system $ "gf -make -name=" ++ modu ++ " " ++ modu ++ ".gf"
+
+mkFile la = if length la == 3 then mainmodu ++ la else la